How to Xbuild to BBB?

[Leonardo Fogel]

Hi.
I've been trying to cross-build the kernel and modules to BeagleBone Black from FreeBSD-10.1-RELEASE-i386 on a VirtualBox VM. I've installed svn and downloaded CURRENT (revision 285358 now). However, the building of the toolchain fails:

$ env MAKEOBJDIRPREFIX=/home/lfogel/obj make buildenv DESTDIR=/home/lfogel/dst KERNCONF=BEAGLEBONE TARGET=arm TARGET_ARCH=armv6
Entering world for armv6:arm

$ env MAKEOBJDIRPREFIX=/home/lfogel/obj make toolchain DESTDIR=/home/lfogel/dst KERNCONF=BEAGLEBONE TARGET=arm TARGET_ARCH=armv6
(... stripped output)
===> kerberos5/tools/asn1_compile (obj,depend,all,install)
(... stripped output)
cc  -O -pipe  -I/usr/home/lfogel/src/kerberos5/tools/asn1_compile/../../../crypto/heimdal/lib/roken -I/usr/home/lfogel/src/kerberos5/tools/asn1_compile/../../../crypto/heimdal/lib/asn1 -I. -DHAVE_CONFIG_H -I/usr/home/lfogel/src/kerberos5/tools/asn1_compile/../../include -std=gnu99 -Qunused-arguments -I/home/lfogel/obj/usr/home/lfogel/src/tmp/legacy/usr/include  -static -L/home/lfogel/obj/usr/home/lfogel/src/tmp/legacy/usr/lib -o asn1_compile asn1parse.o gen.o gen_copy.o gen_decode.o gen_encode.o gen_free.o gen_glue.o gen_length.o gen_seq.o gen_template.o hash.o lex.o main.o symbol.o /home/lfogel/obj/usr/home/lfogel/src/tmp/usr/home/lfogel/src/kerberos5/tools/asn1_compile/../../lib/libroken/libroken.a -L/home/lfogel/obj/usr/home/lfogel/src/tmp/usr/home/lfogel/src/kerberos5/lib/libvers -lvers -legacy
make[5]: "/home/lfogel/obj/usr/home/lfogel/src/tmp/usr/home/lfogel/src/kerberos5/tools/asn1_compile/.depend" line 3: warning: Zero byte read from file, skipping rest of line.
make[5]: "/home/lfogel/obj/usr/home/lfogel/src/tmp/usr/home/lfogel/src/kerberos5/tools/asn1_compile/.depend" line 3: Need an operator
make[5]: "/home/lfogel/obj/usr/home/lfogel/src/tmp/usr/home/lfogel/src/kerberos5/tools/asn1_compile/.depend" line 4: Need an operator
make[5]: Fatal errors encountered -- cannot continue
make[5]: stopped in /usr/home/lfogel/src/kerberos5/tools/asn1_compile
*** Error code 1


I'd also tried different instructions that Google had suggested. They'd all failed too. Please, could you kindly point me to right instructions on how to cross-build to BBB?
Thank you for your time.
Leonardo